CN102061261B - Method for culturing microalgae by utilizing flue gas of coal fired power plant - Google Patents
Method for culturing microalgae by utilizing flue gas of coal fired power plant Download PDFInfo
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- CN102061261B CN102061261B CN2010105663351A CN201010566335A CN102061261B CN 102061261 B CN102061261 B CN 102061261B CN 2010105663351 A CN2010105663351 A CN 2010105663351A CN 201010566335 A CN201010566335 A CN 201010566335A CN 102061261 B CN102061261 B CN 102061261B
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- 239000003546 flue gas Substances 0.000 title claims abstract description 66
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000012258 culturing Methods 0.000 title claims abstract description 14
- 239000003245 coal Substances 0.000 title abstract description 4
- 239000003054 catalyst Substances 0.000 claims abstract description 12
- 241000195493 Cryptophyta Species 0.000 claims description 27
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 14
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 claims description 9
- 229910021529 ammonia Inorganic materials 0.000 claims description 7
- HIVLDXAAFGCOFU-UHFFFAOYSA-N ammonium hydrosulfide Chemical compound [NH4+].[SH-] HIVLDXAAFGCOFU-UHFFFAOYSA-N 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 5
- 239000003517 fume Substances 0.000 claims description 4
- 230000002779 inactivation Effects 0.000 claims description 4
- 238000006722 reduction reaction Methods 0.000 claims description 4
- 238000005201 scrubbing Methods 0.000 claims description 4
- 241000227752 Chaetoceros Species 0.000 claims description 2
- 241000206751 Chrysophyceae Species 0.000 claims description 2
- 241000206747 Cylindrotheca closterium Species 0.000 claims description 2
- 241000206744 Phaeodactylum tricornutum Species 0.000 claims description 2
- 230000003197 catalytic effect Effects 0.000 claims description 2
- 239000003292 glue Substances 0.000 claims description 2
- 230000008439 repair process Effects 0.000 claims description 2
- 238000012958 reprocessing Methods 0.000 claims description 2
- 239000002918 waste heat Substances 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 230000009471 action Effects 0.000 abstract description 2
- 239000000446 fuel Substances 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 238000006555 catalytic reaction Methods 0.000 abstract 3
- 230000003009 desulfurizing effect Effects 0.000 abstract 2
- 230000001590 oxidative effect Effects 0.000 abstract 2
- 239000002994 raw material Substances 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 13
- 238000011160 research Methods 0.000 description 9
- 229910052799 carbon Inorganic materials 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000746 purification Methods 0.000 description 5
- 239000000779 smoke Substances 0.000 description 5
- 239000002028 Biomass Substances 0.000 description 4
- 239000003570 air Substances 0.000 description 4
- 238000010531 catalytic reduction reaction Methods 0.000 description 4
- 239000006227 byproduct Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 2
- 239000004202 carbamide Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000002803 fossil fuel Substances 0.000 description 2
- 230000012010 growth Effects 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 150000002632 lipids Chemical class 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000029553 photosynthesis Effects 0.000 description 2
- 238000010672 photosynthesis Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000005791 algae growth Effects 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 125000003636 chemical group Chemical group 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000000050 nutritive effect Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/40—Capture or disposal of greenhouse gases of CO2
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/59—Biological synthesis; Biological purification
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- Treating Waste Gases (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
Abstract
The invention relates to a method for culturing microalgae by utilizing flue gas of a coal fired power plant, comprising the following steps of: firstly, introducing flue gas to a CO removing tower, and leading the trace amount of CO and NO to generate CO2 and N2 under the catalysis of active semicoke; leading the flue gas from the CO removing tower to enter a desulfurizing tower again, oxidizing SO2 in the flue gas into SO3 under the catalysis action of active semicoke by utilizing O2 contained in the flue gas, and absorbing the SO3 on a catalyst; leading the flue gas to enter a denitrifying tower after passing through the desulfurizing tower, oxidizing the NO in the flue gas into NO2 under the catalysis of active semicoke by utilizing the O2 contained in the flue gas, and absorbing the NO2 on the catalyst; and introducing the purified flue gas to a microalgae culturing device, fixing the CO2 in the flue gas by oily microalgae and then passing through a flue gas-flue gas heat exchanger, and finally, exhausting the residual flue gas through a chimney. In the method, the flue gas of a thermal power plant is taken as one of raw materials for microalgae culture, high-quality oily microalgae is obtained as oil-producing materials, not only the environment is governed, but also fuel is produced, therefore, the method has very important social, economic and environmental benefits.
Description
Technical field
The present invention relates to the cultural method of a kind of little algae, particularly a kind of technique of utilizing the coal-fired plant flue gas cultivating microalgae belongs to new energy field.
Background technology
China is coal production and consumption big country.The topsoil of China belongs to typical coal type pollutes, and seriously polluted, and main pollutent is the coal-fired SO that produces
2And NO
X
According to Chinese environmental statistics annual report and National Environmental bulletin, national SO 2 in waste gas (SO in 2008
2) 2321.2 ten thousand tons of quantity dischargeds, oxynitride (NO
X) 1629.4 ten thousand tons of quantity dischargeds.National sulfurous gas (SO in 2009
2) 2214.4 ten thousand tons of quantity dischargeds.The relevant expert studies show that, one ton of SO of Chinese every discharging
2About 20,000 yuan of the financial loss that causes, Chinese national economy and social development Eleventh Five-Year Plan outline clearly propose, and by 2010, national sulfur dioxide emissions total amount will reduce 10% than " 15 " end of term.If only carry out flue gas desulfurization, also be not enough to guarantee well ambient air quality have trend to show at NO in the near future
XTo replace SO
2Become the main source of acid rain, therefore to NO
XDischarging also to control.
On the other hand, China coal-burning power plant discharges about more than 30 hundred million tons of CO every year at least
2, these CO
2Ability considerably beyond natural photosynthesis and Absorption by Sea Water.Simple reduction of discharging CO
2Be not enough to solve root problem, also might hinder China's sound and rapid economic growth, only have enforcement CO
2Recycling be only fundamental solution.
At present, China's control SO
2And NO
XEffective way mainly be to adopt wet type lime-gypsum method and selective catalytic reduction SCR, selective non-catalytic reduction method SNCR method.Although this technology industrial applicability is very ripe, to alleviating SO in the flue gas
2Pollution played certain effect, but many deficiencies are also arranged, wherein, although the flue gas desulfurization of wet type lime-gypsum method is widely used, but because the limitation of himself, substantially do not select this method on the desulfurizer on new abroad, the sulphur in the flue gas, carbon and nitrogen element do not accomplish that " resource utilization " utilize, and do not belong to low-carbon (LC) cleaner production and circular economy concept.Flue gas takes off NO
XUsing maximum is selective catalytic reduction (SCR) and selective non-catalytic reduction method (SNCR).Utilize ammonia at V
2O
5Under the catalyst action, with NO
XBe reduced into harmless N
2, decreasing ratio can reach 80%～90%.This law technology is ripe, and efficient is high.But following deficiency is also arranged: 1. easily cause the leakage of ammonia (or urea), cause secondary pollution; 2. the corrodibility of ammonia (or urea) is very strong, and equipment manufacturing cost is high; 3. because temperature is high, before the SCR reactor need be installed in electric precipitation, cause dust serious to " etching " of regular catalyst; 4. regular catalyst is expensive.Above reason causes this technology not obtain so far large-scale promotion and application in China, and simultaneously, this method also can't be finished NO
XSuper cleaning remove and satisfy the both culturing microalgae requirement.
The U.S. has just started little algae energy research " Lake Back " plan, the waste gas (CO that research produces with fossil oil from 1976
2) produce height and contain the little algae of fat.The algae energy research project of the U.S. proves, lipid content surpasses 60% of dry weight under the laboratory condition, and outdoor cultivation lipid output can reach more than 40% of dry weight, and every mu of theoretical calculate can produce 1 ~ 2.5 ton of diesel oil year.2006, US Congress's Helios (TAIYANGSHEN) plan of 400,000,000 dollars of supports from sunlight to the fuel oil of agreeing to furnish funds for, task was to realize the industrialization of algae produce oil by 2010, and the target of following production every day MMbbl bio-crude oil, the cost of algae produce oil was down to 2 ~ 3 dollars/gallon in 2015.
China has the unique advantage of self also having obtained abundant achievement in research aspect the scientific research of the marine algae energy.Team take Chinese Marine University, the Institute of Oceanology of the Chinese Academy of Sciences, Xinao Technology Development Co., Ltd etc. as representative has accumulated a large amount of correlative study achievements.Aspect industrialization production, some large-lot producer such as Sinopec and CNOOC etc. are also actively developing or are preparing the tackling key problem of carrying out algae produce oil processing technology in recent years.But from consolidating carbon in the little algae of biology both at home and abroad at present, gordian technique in the power-plant flue gas cultivation oil-containing micro-algae is seen, emphasis mostly is placed in the research of bioreactor, raceway pond and open Da Chi, and super clean purification techniques, both culturing microalgae and little algae upgrading of flue gas are produced the Technology that micro-emulsified fuel combines does not still have development system research.
The at present relevant oil-containing micro-algae research work of bibliographical information mainly is divided into three parts: the one, seek and cultivate the high phycophyta of oil yield rate; The 2nd, be devoted to study the harvesting approach of little algae and reduce the results cost; The 3rd, study and how from phycophyta, to extract grease, produce hydrogen and ethanol.Wherein in first part's work, utilize flood tide CO in the coal-fired plant flue gas
2, and on-airborne CO
2Cultivation oil-containing micro-algae research newspaper seldom.This is the pollutent SO because of relative high density in the coal-fired plant flue gas
2, NO
XAnd trace amounts of CO can suppress the growth of little algae even kill oil-containing micro-algae.For this reason, SO in the flue gas
2, the super clean purifications poisonous, detrimental impurity such as NO, CO are very necessary.And utilize the sulphur ammonium of gas cleaning byproduct in process, ammonium nitrate also to there is not yet report as the nutritive salt of micro algae growth and the research and development that utilize residual heat of electric power plant exploitation constant temperature oil-containing micro-algae to cultivate carbon-fixation-technology.
Summary of the invention
The purpose of this invention is to provide a kind of method of utilizing the coal-fired plant flue gas cultivating microalgae, by with cultivating microalgae after the super clean purification of coal-fired plant flue gas, realize reducing smoke pollution and carbon emission, and it is converted into bioenergy by little algae, reach the purpose that turns waste into wealth.
Concrete steps of the present invention are as follows: (1) at first passes into flue gas and takes off the CO tower, makes wherein trace amounts of CO and NO that the catalytic oxidization-reduction reaction occur under the katalysis of active carbocoal catalyzer, generates CO
2And N
2(2) enter again thionizer from taking off CO tower flue gas out, utilize O contained in the flue gas
2With SO in the flue gas
2Under the effect of active carbocoal catalyst, be oxidized to SO
3, and be adsorbed on the catalyzer; (3) enter denitrating tower through the flue gas behind the thionizer, utilize O contained in the flue gas
2Under the effect of active carbocoal catalyst, the NO in the flue gas is oxidized to NO
2, and be adsorbed on the catalyzer; (4) flue gas after purifying passes into the both culturing microalgae device, by the fixing CO in the flue gas of oil-containing micro-algae
2, again by flue gas-flue gas heat-exchange unit, will remain fume emission by chimney at last thereafter.
Inactivation semicoke in described thionizer and the denitrating tower is regenerated by ammonia scrubbing, obtains simultaneously sulphur ammonium and ammonium nitrate solution, and with its input both culturing microalgae device.
Wherein, in thionizer or denitrating tower regenerative process, can finish repeatedly active carbocoal desulphurization denitration/reprocessing cycle by the mode of two towers or multitower parallel connection.
Described both culturing microalgae device provides heat to keep constant temperature by the generating waste-heat of heat power plant.
Described oil-containing micro-algae is: one or more in flat algae, Phaeodactylum tricornutum, Nitzschia closterium minutissima, chrysophyceae, Chaetoceros, different glue algae, tower born of the same parents algae or the salt algae.
Technique of the present invention has realized that H, the O element in C, S, N and the water in flue gas and the char catalyst all utilizes and the biological chemistry assembling, and all the final chemical group of these elements is dressed up C by the most cheap simple biological photosynthesis and ripe chemical technique
NH
MO
XN
YS
ZThe liquid new forms of energy, system almost without any secondary pollution and processing such as the stacking of unnecessary material, landfills, meets eco-friendly " green low-carbon chemical industry " technological line.This gas pollution control, carbon emission reduction will bring huge society, economy and environment benefit with the novel low carbon Economic Development Mode that both culturing microalgae oil refining combines.
Embodiment
Describe the present invention in detail below by specific embodiment.
Embodiment 1:The about 100mg/m of certain coal-fired plant boiler CO content in smoke
3, SO
2Content 2000mg/m
3, NO
XContent 300mg/m
3, CO
2Content 15%(mass percent).Take off the char catalyst that catalyzer that CO tower, thionizer, denitrating tower load is the described embodiment 1 of patent (publication number CN 101362101A), semicoke particle diameter 4-10 order.Flue gas passed into take off CO tower, air speed 1000h
-1, 160 ℃ of temperature of reaction react CO and the NO of trace under the katalysis of active carbocoal, generate CO
2And N
2Enter again thionizer from the flue gas that takes off the discharge of CO tower, under 80 ℃ of temperature of reaction, utilize O contained in the flue gas
2With SO in the flue gas
2Be oxidized to SO
3, and be adsorbed on the catalyzer; Enter denitrating tower through the flue gas behind the thionizer, temperature of reaction is 70 ℃, utilizes O contained in the flue gas
2NO in the flue gas is oxidized to NO
2, and adsorption storage is on catalyzer.Inactivation semicoke in thionizer and the denitrating tower is regenerated by ammonia scrubbing, obtains simultaneously sulphur ammonium and ammonium nitrate solution.CO content in smoke after the purification is down to 1 mg/m
3, SO
2Content is 20 mg/m
3, NO content is 45 mg/m
3Each component can reach the requirement of GB13223-2003 " fossil-fuel power plant atmospheric pollutant emission standard " during fume emission.
Above flue gas is passed in the both culturing microalgae device, replace the NaNO in the F/2 substratum (pH=8.0) take the ammonium nitrate solution of by-product as the N source
3, cultivate flat algae, making ammonium nitrate concentration is 70mg/L, and 25 ℃ of temperature of control, light intensity 3500lux, light dark period 12h:12h cultivated 7 days, and the biomass of generation is 1.1g/L (dry weight), little algae oleaginousness is the 50%(dry weight).
When other condition was identical, the flat algae that cultivates under the air atmosphere was as control experiment, and the biomass that produces under this condition is 0.9g/L (dry weight), and oleaginousness is 35% (dry weight).
Embodiment 2:About 80 mg/m of certain coal-fired plant boiler CO content in smoke
3, SO
2Content 2500mg/m
3, NO
XContent 500mg/m
3, CO
2Content 15%(mass percent).Take off the char catalyst that catalyzer that CO tower, thionizer, denitrating tower load is the described embodiment 1 of patent (publication number CN 101362101A), semicoke particle diameter 4-10 order.Flue gas passed into take off CO tower, air speed 1200h
-1, 150 ℃ of temperature of reaction react CO and the NO of trace under the katalysis of active carbocoal, generate CO
2And N
2Enter again thionizer from the flue gas that takes off the discharge of CO tower, under 90 ℃ of temperature of reaction, utilize O contained in the flue gas
2With SO in the flue gas
2Be oxidized to SO
3, and be adsorbed on the catalyzer; Enter denitrating tower through the flue gas behind the thionizer, temperature of reaction is 60 ℃, utilizes O contained in the flue gas
2NO in the flue gas is oxidized to NO
2, and adsorption storage is on catalyzer.Inactivation semicoke in thionizer and the denitrating tower is regenerated by ammonia scrubbing, obtains simultaneously sulphur ammonium and ammonium nitrate solution.CO content in smoke after the purification is down to 1 mg/m
3, SO
2Content is 18 mg/m
3, NO content is 33mg/m
3Each component can reach the requirement of GB13223-2003 " fossil-fuel power plant atmospheric pollutant emission standard " during fume emission.
Above flue gas is passed in the both culturing microalgae device, replace the NaNO in the F/2 substratum (pH=8.0) take the ammonium nitrate solution of by-product as the N source
3, cultivate the salt algae, making ammonium nitrate concentration is 70mg/L, and 24 ℃ of temperature of control, light intensity 3400lux, light dark period 12h:12h cultivated 7 days, and the biomass of generation is 1.2g/L (dry weight), little algae oleaginousness is the 46%(dry weight).
When other condition was identical, the salt algae that cultivates under the air atmosphere was as control experiment, and the biomass that produces under this condition is 1.0g/L (dry weight), and oleaginousness is 38% (dry weight).
Claims (5)
1. method of utilizing the coal-fired plant flue gas cultivating microalgae, it is characterized in that it may further comprise the steps: (1) at first passes into flue gas and takes off the CO tower, make wherein trace amounts of CO and NO that the catalytic oxidization-reduction reaction occur under the katalysis of active carbocoal catalyzer, generate CO
2And N
2(2) enter again thionizer from taking off CO tower flue gas out, utilize O contained in the flue gas
2With SO in the flue gas
2Under the effect of active carbocoal catalyst, be oxidized to SO
3, and be adsorbed on the catalyzer; (3) enter denitrating tower through the flue gas behind the thionizer, utilize O contained in the flue gas
2Under the effect of active carbocoal catalyst, the NO in the flue gas is oxidized to NO
2, and be adsorbed on the catalyzer; (4) flue gas after purifying passes into the both culturing microalgae device, by the fixing CO in the flue gas of oil-containing micro-algae
2, again by flue gas-flue gas heat-exchange unit, will remain fume emission by chimney at last thereafter.
2. the method for cultivating microalgae according to claim 1 is characterized in that the inactivation semicoke in described thionizer and the denitrating tower is regenerated by ammonia scrubbing, obtains simultaneously sulphur ammonium and ammonium nitrate solution, and with its input both culturing microalgae device.
3. the method for cultivating microalgae according to claim 2 is characterized in that finishing repeatedly active carbocoal desulphurization denitration/reprocessing cycle by the mode of two towers or multitower parallel connection in thionizer or denitrating tower regenerative process.
4. the method for cultivating microalgae according to claim 1 is characterized in that described both culturing microalgae device provides heat to keep constant temperature by the generating waste-heat of heat power plant.
5. the method for cultivating microalgae according to claim 1 is characterized in that described oil-containing micro-algae is one or more in flat algae, Phaeodactylum tricornutum, Nitzschia closterium minutissima, chrysophyceae, Chaetoceros, different glue algae, tower born of the same parents algae or the salt algae.
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|---|---|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| LU100469B1 (en) * | 2017-10-09 | 2019-04-09 | Cppe Carbon Process & Plant Eng S A | Elimination of SO2 and CO2 from a gas |
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|---|---|---|---|---|
| CN104450525B (en) * | 2013-09-17 | 2017-11-24 | 中国石油化工股份有限公司 | A kind of integrated processes of both culturing microalgae and exhaust gas denitration |
| CN104630065B (en) * | 2013-11-14 | 2018-08-28 | 中国石油化工股份有限公司 | A kind of integrated processes of both culturing microalgae and exhaust gas denitration |
| AU2015292150B2 (en) | 2014-07-23 | 2021-07-29 | China Petroleum & Chemical Corporation | Method of combining microalgae cultivation and industrial waste gas denitrification and system using same |
| CN109876643B (en) * | 2017-12-06 | 2021-08-06 | 中国石油化工股份有限公司 | Method and device for treating flue gas containing nitrogen oxides |
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